const mongoose = require('mongoose');
const config = require('config');
mongoose.connect(`mongodb://${config.get('db.user')}:${config.get('db.pwd')}@${config.get('db.host')}:${config.get('db.port')}/${config.get('db.name')}`, {useNewUrlParser: true,useUnifiedTopology: true})
    .then(() => {console.log('数据库ok')})
    .catch((err) => {console.log(err)})